LM2727 - 用于低输出电压的 N 通道 FET 同步降压稳压器控制器

LM2727是TI德州仪器公司的一款控制器（外部开关）产品，LM2727是用于低输出电压的 N 通道 FET 同步降压稳压器控制器，本站介绍了LM2727的封装应用图解、特点和优点、功能等，并给出了与LM2727相关的TI元器件型号供参考。

LM2727 - 用于低输出电压的 N 通道 FET 同步降压稳压器控制器 - 控制器（外部开关） - DC/DC开关稳压器 - 德州仪器

产品描述

The LM2727 and LM2737 are high-speed, synchronous, switching regulator controllers. They are intended to control currents of 0.7A to 20A with up to 95% conversion efficiencies. The LM2727 employs output over-voltage and under-voltage latch-off. For applications where latch-off is not desired, the LM2737 can be used. Power up and down sequencing is achieved with the power-good flag, adjustable soft-start and output enable features. The LM2737 and LM2737 operate from a low-current 5V bias and can convert from a 2.2V to 16V power rail. Both parts utilize a fixed-frequency, voltage-mode, PWM control architecture and the switching frequency is adjustable from 50kHz to 2MHz by adjusting the value of an external resistor. Current limit is achieved by monitoring the voltage drop across the on-resistance of the low-side MOSFET, which enhances low duty-cycle operation. The wide range of operating frequencies gives the power supply designer the flexibility to fine-tune component size, cost, noise and efficiency. The adaptive, non-overlapping MOSFET gate-drivers and high-side bootstrap structure helps to further maximize efficiency. The high-side power FET drain voltage can be from 2.2V to 16V and the output voltage is adjustable down to 0.6V.

产品特性

Input Power from 2.2V to 16V
Output Voltage Adjustable Down to 0.6V
Power Good flag, Adjustable Soft-Start and Output Enable for Easy Power Sequencing
Output Over-Voltage and Under-Voltage Latch-Off (LM2727)
Output Over-Voltage and Under-Voltage Flag (LM2737)
Reference Accuracy: 1.5% (0°C - 125°C)
Current Limit Without Sense Resistor
Soft Start
Switching Frequency from 50 kHz to 2 MHz
TSSOP-14 Package

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